Someone recommended a program called Eyes Relax to me. I have not heard much about that and can't check if it's safe, it's not a commonly used application apparently. I don't want to install it before I know for sure. I posted it elsewhere on Stack Exchange but was suggested to post my question here.
First, if anybody heard of that application and can tell me if it's safe to install on my computer, like 100% safe.
Secondly, if there are better applications that tell you to take a break when you been using computer on a regular basis, maybe every x minutes and then lock the screen for instance. Now I have Windows 10 and use Firefox so a FF extension would be fine too, so in short, web-apps, FF extensions, or software for Windows are okay, my focus being on the program itself (safety, usefulness, bells and whistles).
I prefer suggestions from people who have used the application they recommend, and can tell me the work for sure and are 100% safe (I've had a virus before and can't go through that again). Thanks!